TY  - JOUR
AU  - M. F. Atiyah
AU  - R. Bott
AU  - L. Gårding
TI  - Lacunas for hyperbolic differential operators with constant coefficients. II.
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1984
VL  - 39
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/RM_1984_39_3_a18/
LA  - ru
ID  - RM_1984_39_3_a18
ER  -